LabVIEWexamplestutorial

利用labview实现信号逐点频谱分析，用于信号分析学习(to get the signal s frequency spectrum)

说明：  Labview汽轮机振动监测源代码，对信号进行倒频谱分析(Labview example)

labview与西门子plc通讯工具，读取plc内的数据，修改plc内部寄存器值，PLC交互(LabVIEW and Siemens PLC communication tools, read the PLC data, modify the PLC internal register value, PLC interaction)

说明：  使用labview实现波形包络检波，可以当子VI使用(Using LabVIEW to realize waveform envelope detection can be used as sub-VI)

航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控，其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency )

labview vi程序，基于版本8.2可以直接运行，,用来仿真电容充放电过程(labview vi program, based on version 8.2 can be run directly, to simulate capacitor charging and discharging process)

说明：  能够进行多个通道的温度信息的采集，并且显示(It can collect and display temperature information of multiple channels)

Bayspec解调模块作为当前国际上最常用的光纤光栅信号解调设备，具有精度高、采样率高、方便工程师进行二次开发。这里提供了一个适用于Bayspec的解调软件，全用LabVIEW编写代码，可直接读取光谱和波长数据。(Bayspec demodulation module is the most commonly used fiber grating signal demodulation equipment in the world. It has high precision, high sampling rate and is convenient for engineers to carry out secondary development. Here is a demodulation software for Bayspec that uses LabVIEW to write code that directly reads spectral and wavelength data.)

使用For循环产生100个0~1之间的随机数，并同时判定当前随机数的最大值和最小值(For loop to generate 100 random numbers between 0 and 1, and at the same time to determine the minimum and maximum values ​ ​ of the current random number)

1．采用Labview设计一虚拟函数信号发生器， 通过数据采集卡输出波形信号，调节信号的相关参数，可观察示波器上波形的变化情况。 ⑴ 以NI MyDAQ数据采集卡作为输出接口； ⑵ 数据采集卡输出多种信号，至少完成三种波形：正弦波、三角波、方波(可调占空比)的输出，同时前面板上显示各输出波形； ⑶ 频率、幅值、初相位、直流偏移量和方波的占空比（0～100 ）等参数可以通过前面板控件调节。 ⑷ 前面板可显示输出波形。(1. Labview design using a virtual function signal generator, data acquisition card output waveform signal, adjust the relevant parameters of the signal can be observed on an oscilloscope waveform changes. ⑴ with NI MyDAQ data acquisition card as output interface ⑵ data acquisition card output a variety of signals, to complete at least three waveforms: sine wave output, triangle wave, square wave (adjustable duty cycle), while each of the output waveform is displayed on the front panel ⑶ frequency, amplitude, initial phase, the DC offset and duty cycle square wave (0 to 100 ) and other parameters via the front panel controls to adjust. ⑷ output waveform can be displayed on the front panel.)